1 Use a cock ring. 2  A very easy way to keep an erection is to use a cock ring during sex. 3  A cock ring is an adjustable plastic band that fits over the base of the penis and behind the testicles. 4  A cock ring gives a man a rock hard erection, and desensitizes the penis so he can keep an erection longer.
A Master Chief Petty Officer is a Senior Noncommissioned Officer, with a military paygrade of E-9. The civilian equivalent of this military rank is roughly GS-6 under the federal government's General Schedule payscale.
The proper form of address to a Chief Petty Officer is Chief, Senior Chief (or Senior), or Master Chief according to their rating. In the U. S. Navy, the Chief is specifically tasked, in writing, with the duty of training Junior Officers (Ensign, Lieutenant (j.g.), Lieutenant).